Torch tip



A F. JENKINS Jan. 8, 1946.

TORCH TIP 2 Sheets-Sheet 1 Filed Feb. 2, 1944 Jan'. 8, 1946.

A. F. JENKINS TORCH TIP Filed Feb. 2, 1944 2 Sheets-Sheet 2 PatentedJan. 8, 1946 This inx m o names t .blownipes. or. tqxches lithetypeiusinablgrnmg asesiqnacutting, wen-4 s, and otherv purposes, arm.has'pari-ticular. fee, mnce to the detachable mixing and. discharge tipsfor such. torches.

The. eneral: object otthe. invention is. to pm.-

vide. ngyel and. improved "terch tipsf'which, may.

Wa e' ts lz e qoesim t mpe e,

J pta'ipipg all Rifthe dii't', often bod-y member;

I online" I a m 6f Figiiie'eir" ever, theffpgese E itte s;

Eiieuxe is @LSQQHPQQL f tie-Q: metxps t E wce i i e hev m hemtfie xsplied; Q

Figure, 5 is; a lon itudinal seetieq tx w e standardizm tip. body 11.0mmwei h, isredepfie l fol; 11 a nprovidi-ng eith t ai at t p or. a qQLiQfil shank 'ti-p;

Figures is. a. similar: 34 3338 OI; me, mag. engtej, av tip; of; theconical shank; tyne usin the 99%! member;

Eigure '1 is a similar view of therean emu; a. tip; df'the flat to txpelusing the standamiz d z'i i w 9. 3 e rsttxe. 1 eat.

Figure a'is'a transyexse sectional view.- thnougn theinterm'ediate"portion affthe tipv shown in Figures; 5, '6:,"and= taken"on line" ipf iEigure 5, blfidf iridicjating the annuIar-natfixe offthein te'rifiedizitmixing c'l iamldri '"i tip similar. to thatoi' or.relativelyfshatllow In Figures 1 and 2 of the drawings, there is commonto such tips, and, as indicated at 43, an

annular groove 44 separates the shoulder 42 from the intermediatefrustoconical shoulder 45. Gem trally of the tip body, there is providedthe elongated rearwardly projecting tubular portion 46. Between thisaxial tubular portion, 46 and the outer wall of the tip carrying theshoulders 42 and 45, there is an annular recess. into which is forcedthe insertable member 48, The inner portion of the recess 4'! isshouldered as at 49.

The insert 48 is shown in longitudinal section in'Figure 2 of thedrawings and it will be seen that this element is providedwith thefrustoconicalrear end portion 50, which forms the third" and rearmostshoulder of the series'on the shank of the tip. The insert is cut awayas at to form thesecond annular-groove into which gases maybe deliveredfrom the torch body. The interior bore 52 of theinsert has a forced fitwith the outer wall of the tubular extension 46 of the tip body. Anappropriate number of fine bores or mixing passageways 55 are formed theinsert and these bores lead from the gas supplying groove 5| to theforward end of the recess 4'l-gw'here they are preferably in substantialalignment with the passageways l3. The insert members 48aredrilleddiagonally as at 51 to provide lateral communication 1 withthe intermediate portions'of the bores 55, and these passageways 51.register with similar passageways '58 drilled through the shank of thetip body portion and opening into the first groove 44 which communicateswith the oxygen supplying passageways in the torch body member. Theforward annular surface .68 of the insert 48, which abuts the shoulder49 is provided withradial groove 6| which intersect the respectiveopenings of the bores 55. It has been foundthat' the provision of thesegrooves or channels 6| improves the operation of thetip especially inconnection with the use of the annular equalizing chamber 35.

passageway 51' connects the groove 44' with each bore 55. In thisembodiment especially long bores are provided, giving-"a very thoroughinjecting and mixing effect. The forward end of the insert abuts theshoulder 49 and radial grooves 6| intersect the openings of the bores 55as in the case previously described.

In order to secure the insert 48' firmly tothe body 'portion' of thetip, and to seal off the joining surfaces of the bore 52' and thetubular portion 46, the rear end of thebore 52' is bevelled orcountersunk as at 65 and the rear end 66 of the tubular extension 46 isspun over the bevelled portion, all as clearly shown in Figure 3 of thedrawings. v a

Not the least important feature of the invention is the provision oftips of this general character which comprise a more or lessstandardized body portion to which selected inserts may be applied toprovide either a flat endshank or a conical seating shank. In Figure 5of the drawings such'a standardized body portion is shown at 10. Acentral'oxygen passageway ll is provided extending through the tip. Theforward tapered end of the tip is provided also with somewhat convergentdischarge passageways 12 which lead from the elongated annular mixingand equalizing-chamber 15. Near the rear end of the tip the shoulder 16is formed and extending further rearwardly is the central tubular por InFigure 6 of the drawings, there is tion Tl. shown the conversion of thisbody portion into a conical seating torch tip and insert 88 is used Itisthought that these grooves function to provide a slight individualexpansion for the gasespassing-from the bores 55 into the equalizingpassageway 35. i

There i's'illustrated in Figures 3 and 4 of the i drawings aconicalseating tip of the same gen- I eral-character as'the one shownin Figures1 and 2, This tip is designatedgenerally by thereference character 46'and the passageways inthe forward body portion thereof are thesameasthose shown in the preceding two figures. However, the shank endof the body of this tip, is formed "difierently, the intermediatefrustoconicalshoulder as well as the-rearmost shoulder 5| is located.The intermediate portionof the insert is extended forwardly to the pointwhere its shoulder 63abuts'a corresponding shoulder 64-on the bodyportion. At' this intermediate portion the groove 44' is formed and thed gonal to accomplish this adaptation, The forward tubular. portion ofthe insert ,80 extends for a.

considerable distance into the annular chamber 15 and is provided withthe combustion gas bores 8 I. A rather wide forward shoulder 82 isformed on the insert and this shoulder is coextensive with and adaptedto contact closely the rear face of the shoulder 16 on thetipbody. Thetwo shoulders 16 and 82 provide the first partly conical enlargement ofthistype oftip. Both of the gas grooves 83 and 84 and the other twoshoulders 85 and 86 are formed-upon the insert, and the diagonal oxygensupplying bores 88 are also formedcompletely in the insertto connectthe,

groove 83 with the mixing bores 8|. The body portion 10 is shownconverted to a. flat end tip in Figure! of the drawings. The insert 90accomplishes this transformation, it being necessary, however, to cutoff a portion of the rearwardly extending tubular element 11 of the tipbody.

A shoulder 9| of the insert abuts the shoulder 16 of the body portion,the insert is provided with the gas conducting and mixing bores 8| andthe oxygen introducing passageways or bores 88 are formed in the rearpart of the insert, The gas bores 8| communicate with the groove 93 andthe passageways 88' connect with the groove 94.

From this it will be seen that a supply of blank tip bodies can be madefrom uniform specifications and then converted to either type of tip,

desired. Furthermore, the tip shown in Figures 5 to=8 inclusive retainsone of the basic features of the invention, namely, the annularexpansionand equalizing chamber, which in this case, however, isconsiderably elongated in an axial direc tion. a

-In Figures and lo of the drawingsthere is shown a two partinterchangeable tip made under the same general principles governing theconstruction of the forms shown in the immediately preceding figures,but retaining the equalizing.

and expansion featuresof the tips, shown in Figarcades 1i and; 3:. Theexpansion it are retained and the rearward recess of the bad! t mes: then isshon dercd as at 9:

insert some similar to tbeinser so Show n more hiit; s presided with theradia r oms Bit nterdischarge ends. of the ducts: th The;

equalizing chamber as" nerio ns; the:

amerunctionv as; he, eeuiralenteham crs ear ier described.

In Fi ure t1; oi; the: drawings there; ashowm a. li h ly nmdifled; form.of; the. inyention GQmRQi E athlete, the embodiment; illustrated in Figre-.6: and. adapted foruse intha interchangeable; ti assemblies. Thevarions-,.parts. are the same; as; shown in F gure 6. BXGBDtLfQF theproyision oi the: screwthreaded connection Sit-between the. insert; 838:and the tiplbodyltt'".v This; threaded connec -etion scores; to securetheparts together: more and in some. cases: be prererred tor aduring-fit;

In Figure 12 of; the drawings; a tip of the conical seating. type shownwhich comprises a modis fication or the arrangements shown in. Figures3. and 6. or? the drawings; The. body portion E00. quite! similar to;the portion 10a of Figure, (i and the. insert: HM: corresponds; in manydetails. with the insert an of Figure: 6. However, in order to.effectively seal off the meeting surfaces: of the in-. nor portion H12ofi the'bodyr I'zlllt and the rearward portion H131 of. the insert,certain novel provisions are: made. Both 017' these portions arecutoffashort distance from the ultimate end: of the tip and thecentralioxygenbore ll" of the, portion is recess'ed' as atv ms forashortdise. tance trorn its rearward end. A cap. member 1116 having afrustoconi'oal rear end forming the ta-.v pered continuation of theshoulder 8d of the in. sort, and a tubular portion Nil, is applied tothe end or the' tip This cap, element may have either a forced fit. withthe other parts with which it contacts or it may be soldered into place.In either case, it serves effectually to seal oft the rear contactingsurface v of the partsof the tip, streamlining the gas contactingsurfaces: and preventinggas seepage and deterioration at the othercontacting points.

Various changes or modifications may be made in the embodimentsillustrated and described herein without departing from the scope of theinvention as defined in the subjoined claims.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

1. A torch tip of the class described comprising, in combination, a mainone-piece body portion provided with an axial oxygen passageway and anannular series of combustion gas passageways opening through dischargeorifices in the front end of the tip, an annular recess formed in therear end of the tip body from which said gas passageways lead, thecentral portion of the tip body extending rearwardly beyond the radiallyouter portions of said body as a relatively narrow tubular projection,an annular insertable member fitting snugly within the recess butterminating short of the forward end thereof whereby an annular chamberis provided forwardly of the member, said member being provided with aseries of gas admission passageways leading to said chamber, whereby thedistribution of gases from said admission passageways to the gaspassageways in the tip body portion may be equalized, the insertablemember also extending rearwardly beyond the radially outer portions ofthe body of the tip and fitting the tubular axial projectionoritthegbodyr tightly and being coterminous; theses Wh' 2:. Atorclrtip;of; thaclasadescribed comprising, in cqmbination, a main one-piece bodyportion. pro-yidcdwith an axial! oxygen. passageway; and annular series.ofcf combustion gas passageways, opening through. discharge, orificesin; the front endzoi the tip, an annularrecess; formed in the rear endof thetip body trom whichjsaidlgas. pass. sageways lead; the. central:portion of the. tip. body) extending rearwardly beyond the.-radiallyouter portions of said body as a relatively.-narroiwtu:lprojection; an annular insertable. member fittmgl snugly within the.recess. but terminating.

. short ofi theiorward end: thereofi whereby an ans.

nularchamber is; provided forwardly. of the mem-.; ber, said memberbeing proyided. with arseriesio t gas admission passageways leadingtolsaid charm. berwhereby the. distribution of gases from said:

admission passageways to the gas passagcway in the tip body portion maybe equalized; thesinserts. abl'emember also extending rearwardly beyondthe radially outer portions of 'the tip,-

and the: tubular axial projection of. the body tightly, and:beingcoterminous therewith, the, rearwardly extending; portion or the.insertabtcmember being formed with flanges. and grooyes, adapted to,interiit. with complementary parts oi' a. torch body for segregating thegases. and. cone ducting. them to the proper: passageways...

' 3.; A torch tip of the class. described comprise in combination, amain. one-.pieceibody nor: tronprovided with an axial oxygenpassagewfio' and an annular seriesofcombustion. gas; DB $S3Q- waysopening through discharge orifices the. front; end or the tip an annularrecess formedin; the rear end of the tip. body from which said: gas.-passageways lead, the central portion of the to body extendingrearwardly beyond the. radially outcr portions of said bodyas; a.relatively narrowtubular projection, an annular insertable. memberfitting: snugly within the recess but: terminating.

short: of, the forward end thereof whereby an.an-.

nu-lar chamber is provided forwardly of the meme her; said member beingprovided'with a series oi:

as. admission passageways leading to. said chains her whereby thedistribution of gases from said;

admission passageways to the gas passagewaysin the tip body portion maybe equalized, the insertable member also extending rearwardly beyond theradially outer portions of the tip body and fitting the tubular axialprojection of the body tightly, and being coterminous therewith therearwardly extending portion of the insertable member being formed withfrustoconical flanges and laterally opening grooves adapted to interfitwith complementary parts of the conical socket of a torch body forsegregating the gases and conducting them to the proper passageways.

4. A torch tip of the class described comprising, in combination, a mainone-piece body portion provided with an axial oxygen passageway and anannular series of combustion gas passageways opening through dischargeorifices in the front end of the tip, an annular recess formed in therear end of the tip body from which said gas passageways lead, thecentral portion of the tip body extending rearwardly beyond the radiallyouter portions of said body as a relatively narrow tubular projection,an annular insertable member fitting snugly within the recess butterminating short of the forward end thereof whereby an an nular chamberis provided forwardly of the member, said member being provided with aseries of gas admission passageways leading to said cham ber whereby thedistribution of gases from said admission passageways to the gaspassageways in the tip body portion may be equalized, the insert ablemember also extending rearwardly beyond the radially outer portions ofthe tip body and fitting the tubular axial projection of the bodytightly, and being coterminous therewith, the opening in the rear end ofthe annular insertable member being flared and the projecting tubularpart of the tip body being spun outwardly into the flared portion ofsaid opening to seal the parts together.

i 5. A torch tip of the class described comprising, in combination, amain one-piece body portion provided with an axial oxygen passageway andan annular series of combustion gas passageways opening throughdischarge orifices in the front end of the tip, an annular recess formedin th rear end of the tip body from which said gas passageways lead, thecentral portion of the tip body extending rearwardly beyond the radiallyouter portions of said body as a relatively narrow tubular projection,an annular insertable member fitting snugly within the recess butterminatin short of the forward end thereof whereby an annular chamberis provided forwardly of the member, said member being provided with aseries of gas admission passageways leading to said chamber whereby thedistribution of gases from said admission passageways to thegaspassageways in the tip body portion may be equalized, the insertablemember also extending rearwardly beyond the radially outer portions ofthe tip body and fitting the tubular axial projection of the bodytightly, and being coterminous therewith the rearwardly extendingportion of the insertable member being formed with frustocon'icalflanges and laterally opening grooves adapted to interfit withcomplementary parts of the conical socket of a torch body forsegregating the gases and conducting them to the proper passageways, theextreme'coterminous rear ends of the insert memf ber and the tubularprojection of the body being transversely cut ofi and the inner wall ofthe tubular part being recessed, and a sealing cap applied to the thusaltered rear end of the tip, said cap having a frustoconical flangeoverlying the end of the tip and a tubular projection ocelements may besecured, said member being apcupying the recessed portion of thetubular'body' projection. I

I 6. A torch tip of the class described comprising, in combination, amain one-piece body portion provided with an axial oxygen passageway andan annular series of combustion gas passageways opening throughdischarge orifices in the front end of the tip, an annular recess formedin the rear end of the tip body from which said gas passageways lead,the central portion of the tip body extending '-rearwardly beyond theradially cuter portions of said body as a relatively narrow tubularprojection, an annular insertable member fitting snugly within th recessbut terminating short of the forward end thereof whereby an annularchamber is provided forwardly of the member, said member being providedwith a series of gas admission passageways leading to said chamberwhereby-the distribution of gases from said admission passageways to thegas passageways in the tip body portion may be equalized, the insertablemember also extending rearwardly beyond the radially outer portions ofthe tip body and fitting th tubular axial projection of the a bodytightly, and being coterminous therewith and these parts together.

'7. A torch tip blank comprising a standardized one-piece body member towhich selectable shank proximately cylindrical but with a radial flangeadjacent its rear end providing a shoulder by means'of which the tipmaybe clamped to a torch body, an axial oxygen passageway in the member,

an annular series of gas passageways surrounding 7 ALEXANDER F. JENKINS.

